Description:
response make it ideal for recording instruments. Versatile, durable, and precise, the KSM137 is an outstanding microphone for instruments ranging from percussion to wind, strings to brass, and piano to guitar. Highly consistent cardioid polar pattern Ultra-thin, 2.5 micron

… two replaceable
inserts: one of them with a 40 microns teflon film (s = 2,04), branching off a wave with level - 24 dB into an
adjacent port, and another one with a 200 microns mylar film (s = 3 ,07), providing 3 dB …